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| author | gtian <gtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-05-14 06:37:46 +0000 |
|---|---|---|
| committer | gtian <gtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-05-14 06:37:46 +0000 |
| commit | 1ab9159e6ab6c7171e4e43b9de76584b07e241c9 (patch) | |
| tree | 7809b3eb89c2e4e7b0410efc38d2c00f67d8a24e /MdePkg/Library/BaseLib/Ipf/ReadCpuid.s | |
| parent | 8e38ef0a9c97889807e40e2298728cfe0d6db3af (diff) | |
| download | edk2-platforms-1ab9159e6ab6c7171e4e43b9de76584b07e241c9.tar.xz | |
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2590 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/Ipf/ReadCpuid.s')
| -rw-r--r-- | MdePkg/Library/BaseLib/Ipf/ReadCpuid.s | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Ipf/ReadCpuid.s b/MdePkg/Library/BaseLib/Ipf/ReadCpuid.s new file mode 100644 index 0000000000..2176dad116 --- /dev/null +++ b/MdePkg/Library/BaseLib/Ipf/ReadCpuid.s @@ -0,0 +1,40 @@ +/// @file
+/// IPF specific AsmReadCpuid()function
+///
+/// Copyright (c) 2006, Intel Corporation
+/// All rights reserved. This program and the accompanying materials
+/// are licensed and made available under the terms and conditions of the BSD License
+/// which accompanies this distribution. The full text of the license may be found at
+/// http://opensource.org/licenses/bsd-license.php
+///
+/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+///
+/// Module Name: ReadCpuid.s
+///
+///
+
+//---------------------------------------------------------------------------------
+//++
+// AsmReadCpuid
+//
+// This routine is used to Reads the current value of Processor Identifier Register (CPUID).
+//
+// Arguments :
+//
+// On Entry : The 8-bit Processor Identifier Register index to read.
+//
+// Return Value: The current value of Processor Identifier Register specified by Index.
+//
+//--
+//----------------------------------------------------------------------------------
+.text
+.type AsmReadCpuid, @function
+.proc AsmReadCpuid
+.regstk 1, 0, 0, 0
+
+AsmReadCpuid::
+ mov r8 = cpuid[in0];;
+ br.ret.dpnt b0;;
+.endp AsmReadCpuid
+
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